Your kid comes to you with a business idea. They're excited. They've done some planning. They even know how much they'll charge. But here's the question nobody's asking: Is this actually a smart use of their money? Not "Will they make money?"—that's easy to figure out. The harder, more important question is: "Will they make enough  money to justify what they're spending?" That's what ROI tells you. Return on Investment. And it's possibly the most powerful number your kid will

The best way to make business lessons stick? Connect them to businesses kids already see and understand.  When kids realize these...